[desktop-discuss] Xorg Modeline generation

[Lars Tunkrans]

Thanks,
The Cvt program have this  "-r" option  that calculates data for LCD  screens.  The
older Gtf  program apperantly  only works for CRT screens.
The pixel clock value derived now actually  corresponds with the info from Samsung.

$  ./cvt 2560 1600 60 -r -v
1: [V FIELD RATE RQD]         :       60.000000
2: [H PIXELS RND]             :     2560.000000
2.5: [ASPECT_RATIO]           :      16:10
2.5: [V SYNC]                 :        6.000000
3: [LEFT MARGIN (PIXELS)]     :        0.000000
3: [RIGHT MARGIN (PIXELS)]    :        0.000000
4: [TOTAL ACTIVE PIXELS]      :     2560.000000
5: [V LINES RND]              :     1600.000000
6: [TOP MARGIN (LINES)]       :        0.000000
6: [BOT MARGIN (LINES)]       :        0.000000
7: [INTERLACE]                :        0.000000
8: [H PERIOD EST]             :       10.129167
9: [Actual VBI LINES]         :       45.413410
9: [VBI LINES]                :       46.000000
10: [Minimum VBI Lines]        :       15.000000
10: [ACT VBI LINES]            :       46.000000
11: [TOTAL V LINES]            :     1646.000000
12: [TOTAL PIXELS]             :     2720.000000
13: [Non-rounded PIXEL FREQ]   :      268.627197
13: [ACT PIXEL FREQ]           :      268.500000
14: [ACT H FREQ]               :       98.713234
15: [ACT FIELD RATE]           :       59.971588
16: [ACT FRAME RATE]           :       59.971588
20: [H BACK PORCH]             :       80.000000
21: [H SYNC RND]               :       32.000000
22: [H FRONT PORCH]            :       48.000000
23: [V FRONT PORCH]            :        3.000000

 # 2560x1600 @ 60.00 Hz Reduced Blank (CVT)
 #   field rate 59.97 Hz; hsync: 98.71 kHz; pclk: 268.50 MHz
 Modeline "2560x1600_60.00_rb"  268.50  2560 2608 2640 2720  1600 1603 1609 1646  +HSync -Vsync

Regards
//Lars
 
 
This message posted from opensolaris.org